452 I December, 



Same as migratorius, with the following differences : — Head with the ridges on 

 the vertex not so marked, the median one very slight, while the absence of the 

 transverse one allows the vertex gradually to merge into the frons. Pronotum not 

 so much compressed anteriorly, with the anterior margin more acutely angled in the 

 middle, median ridge elevated into a distinct crest, divided into two parts by the 

 cross furrow, with the part anterior to the cross furrow more elevated than that 

 posterior to it. Posterior tibia? red. $ much smaller than $ . 



Length, $ , about 45 mm., ? , about 60 mm.* 



The occurrence of this species has been mentioned under P. migratorius. The 

 specimen recorded by Mr. H. N. Eidley (Ent. Mo. Mag., xx, p. 215) from Co. Kerry 

 was really a M. grossus (q. v.). Curtis' figure and description of Lo. Christii must, 

 I think, refer to this species, but the figure is drawn with the legs greenish ; his type 

 is, however, out of reach, as I believe it is now in Australia. 



Linne's danicus (Syst. Nat., i, 2, p. 702) is probably synonymous 

 with cinerascens, Fab., and, according to the strict law of priority, 

 ought perhaps to be substituted for it, but Fabricius' name has been 

 in universal use since 1793. 



I have some specimens from Corfu in which the head, pronotum, 

 and posterior femora are bright green, and the posterior tibiae rich 

 red ; but generally the species is not so brightly coloured, and is 

 sometimes much darker. 



Reputed Species. 



(Edipoda ccerulescens, Linne. — Stewart (Elements of Nat. Hist., 1805, ii, p. 95) 

 gives this as British, but its occurrence is very doubtful. In Europe it is generally 

 distributed, except in the North, and it is found in the Channel Islands. 



Psophus stridulus, Linne. — The same author gives this as British, and I hope 

 it may turn out to be so, but we can hardly admit it without further evidence. It 

 is found over North and Middle Europe. It is a thick, heavy looking species, the 

 prosternum has no central projection, the median ridge of the pronotum is somewhat 

 elevated, and has a depression on either side, the elytra are broad compared with 

 their length, and not acuminate at the apex ; the wings are sinuate at the apex 

 and of a deep red, with a broad, dark, fuscous marginal band. It occurs, according 

 to Brunner, in moist, fertile mountain meadows. 



Pezotettix pedestris, Linne, vide Stenobothrus parallelus, ante. 



v.— SCHISTOCERCA, Stal. 

 This genus contains the largest British species. The frons is 

 perpendicular ; the pronotum is crossed by three distinct furrows ; 

 there is a median ridge, but no lateral ones; the prosternum has a 

 central projecting spur ; the elytra have the discoidal area irregu- 

 larly reticulate, and have no accessory vein ; the posterior femora are 

 serrated along the superior margin ; the cerci are compressed with 

 the apex bluntly pointed. 



* The measurements here, as elsewhere, are taken from the anterior border of the vertex to 

 the most posterior part of the body, or (as in this case) of the closed elytra. 



